泡沫镍自支撑的草酸镍复合材料的制备及电化学性能  

Preparation and Electrochemical Performance of Self-Supporting Nickel Oxalate Composite with Nickel Foam

作　　者：陈晴 张佳丽 李帅 章海霞[1] 侯莹[1] CHEN Qing;ZHANG Jiali;LI Shuai;ZHANG Haixia;HOU Ying(Key Laboratory of New Material Interface Science and Engineering of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学,新材料界面科学与工程教育部重点实验室,山西太原030024

出　　处：《化学反应工程与工艺》2022年第6期552-559,共8页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金(51703150)。

摘　　要：利用泡沫镍为集流体直接生长活性物质制备电极材料的方法,具有增加导电性以及免黏结剂等优点。以六水合硝酸镍作为镍源,泡沫镍作为集流体,通过水热法制备了草酸镍/泡沫镍(NiC_(2)O_(4)/NF)自支撑电极,并对其进行电化学性能测试。结果表明:当六水合硝酸镍与草酸的物质的量之比为1:5、电流密度为0.5 A/g时,NiC_(2)O_(4)/NF自支撑电极的质量比电容高达2027.78 F/g;以100 mV/s的扫描速率循环3000次后,电极的质量比电容增加到113.36%,较高的质量比电容和良好的循环性能揭示了NiC_(2)O_(4)/NF自支撑电极在储能领域中良好的应用前景。Using foamed nickel as the current collector to directly grow active materials to prepare electrode materials had the advantages of increasing conductivity and avoiding binders.In this paper,nickel nitrate hexahydrate was used as the nickel source,and nickel foam was used as the current collector.A nickel oxalate/nickel foam(NiC_(2)O_(4)/NF)self-supporting electrode was prepared by a hydrothermal method.The electrochemical performance test showed that when the molar ratio of nickel nitrate hexahydrate to oxalic acid was 1:5 and the current density was 0.5 A/g,the mass-specific capacitance of the NiC_(2)O_(4)/NF self-supporting electrode was up to 2027.78 F/g.After cycling 3000 times at a scan rate of 100 mV/s,the mass-specific capacitance of the electrode increased to 113.36%.The high mass-specific capacitance and good cycle performance revealed the good application prospects of NiC_(2)O_(4)/NF self-supporting electrodes in the field of energy storage.

关 键 词：储能材料 水热法 草酸镍 自支撑电极 电化学性能 

分 类 号：O646[理学—物理化学] TQ050.4[理学—化学]